The book is now available! 178697
(just those submitted by Bajpai)
Prime Curios!
Curios: Curios Search:


Just showing those entries submitted by 'Bajpai': (Click here to show all)

+ The smallest emirp that is the sum of a triangular number and its reversal (91378+87319=178697). It is also expressible as the sum of two squares (419^2+56^2). [Bajpai]

Prime Curios! © 2000-2018 (all rights reserved)